Tell yourself the odds are against you

Put yourself in the context of the whole world. Imagine spending a week interacting with all 7 billion people on the planet. Then consider what percentage of those people would say that you're generally a likeable person.

For example, thinking that around 70 percent of people would like you means 30 percent wouldn't. That means out of 7 billion people, 2.1 billion wouldn't like you. That is a lot of people. You're going to be disliked. That means shrug it off and move on.